Time-dependent correlations in quantum magnets at finite temperature

Abstract

In this article we investigate the time dependence of the gap mode of copper nitrate at various temperatures. We combine state-of-the-art theoretical calculations with high precision neutron resonance spin-echo measurements to understand the anomalous decoherence effects found previously in this material. It is shown that the time domain offers a complementary view on this phenomenon, which allows us to directly compare experimental data and theoretical predictions without the need of further intensive data analysis, such as (de)convolution.

arXiv comment6 pages, 5 figures

References in corpus (28)

• Perturbation Theory by Flow Equations: Dimerized and Frustrated S=1/2 Chain
• Multispinon continua at zero and finite temperature in a near-ideal Heisenberg chain
• Spin dynamics and transport in gapped one-dimensional Heisenberg antiferromagnets at nonzero temperatures
• Finite-Temperature Phase Diagram of Hard-Core Bosons in Two Dimensions
• Novel approach to description of spin liquid phases in low-dimensional quantum antiferromagnets
• Excitations in one-dimensional S=1/2 quantum antiferromagnets
• The Structure of Operators in Effective Particle-Conserving Models
• Finite-temperature lineshapes in gapped quantum spin chains
• Triplet Waves in a Quantum Spin Liquid
• Spin-Wave Lifetimes Throughout the Brillouin Zone
• Dynamic correlations of antiferromagnetic spin-1/2 XXZ chains at arbitrary temperature from complete diagonalization
• Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics
• Finite Temperature Dynamical Correlations in Massive Integrable Quantum Field Theories
• A neutron scattering study of two-magnon states in the quantum magnet copper nitrate
• Matrix product state formulation of frequency-space dynamics at finite temperatures
• Adapted continuous unitary transformation to treat systems with quasiparticles of finite lifetime
• Space-Time Approach to Scattering from Many Body Systems
• Finite Temperature Dynamical Structure Factor of Alternating Heisenberg Chains
• A study of the quantum classical crossover in the spin dynamics of the 2D S=5/2 antiferromagnet Rb2MnF4: neutron scattering, computer simulations, and analytic theories
• Low-Temperature Dynamical Structure Factor of the Two-Leg Spin-1/2 Heisenberg Ladder
• Asymmetric Thermal Lineshape Broadening in a Gapped 3-Dimensional Antiferromagnet - Evidence for Strong Correlations at Finite Temperature
• Magnetic excitations in the S = 1/2 antiferromagnetic-ferromagnetic chain compound BaCu2V2O8 at zero and finite temperature
• Finite Temperature Dynamics of the Spin 1/2 Bond Alternating Heisenberg Antiferromagnetic Chain
• Finite temperature line-shapes of hard-core bosons in quantum magnets: A diagrammatic approach tested in one dimension
• Hard-core boson approach to the spin-1/2 triangular-lattice antiferromagnet Cs${}_2$CuCl${}_4$ at finite temperatures in magnetic fields higher than the saturation field
• Vertex corrections in the dynamic structure factor in spin ladders
• Low temperature thermodynamics of multi-flavored hardcore bosons by the Brückner approach
• Anomalous thermal decoherence in a quantum magnet measured with neutron spin-echo spectroscopy

Cited by in corpus (4)

• Three-body bound states in antiferromagnetic spin ladders
• Efficient flow equations for dissipative systems
• Effects of Interactions on Dynamic Correlations of Hard-Core Bosons at Finite Temperatures
• Anomalous thermal broadening in the Shastry-Sutherland model and SrCu${}_2($BO${}_3{)}_2$